Solidworks 2009 - SP5.0 - Measure, Unit/Precision problem

Ever since I've installed SP5.0 for 2009, anytime I make a measurement, go to the unit/precision dialogue box to change the number of decimals, it's always defaulted to 2 places, but now with this SP, if I want to change the units to more decimals, I get an error dialogue telling me to pick an integer between 2 and 256. Is there a fix for this? Thanks.SolidworksUser Interface